He was jailed for murder in Sweden in 2008 after gunning down Deren Omar Mohammed with a pistol at close range.

But after returning to the UK, Amin ambushed Mircea in the street in Wolverhampton while wearing a balaclava and knifed him in a frenzied attack last September.

He was jailed for life with a minimum of 40 years at Birmingham Crown Court after being found guilty of murder.

The court heard how Amin lavished gifts on his housemate, who he “loved like a brother”, but became jealous after fellow Romanian Andrei Bourceanu moved into the house and began sharing a room with his old schoolfriend.

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Describing Amin as a singularly and extraordinarily dangerous man, Judge Melbourne Inman QC told the double killer: “You were seen to move your victim’s arms out of the way in order to stab him where you aimed.

“You severed both carotid arteries on each side of his neck and there were many penetrating stab wounds to his abdomen, chest and vital organs.”

As Amin stared at the floor in the dock, the judge added: “This is the second person you have murdered.

“The circumstances of how you came to murder Mr Cozmiuc are very similar – the slaying arose from your very violent reaction to your extreme jealousy and feeling of betrayal when Mr Cozmiuc appeared to have transferred his friendship and affection from you.”

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